For further proof please see his Twitter page. Mark "Rhino" Smith has changed his cover photo to a picture of the character.

And it seems he's pretty pleased with the casting.

His Instagram caption reads: "So excited to be working on #zootopia @zootopiadisney for the role of RHINO as Officer McHorn👍🏽🇬🇧🇺🇸 2015 has been my best year #Grateful 🙏 Amazing cast and crew, released March 4th 2016 If you predicted this when I growing up, I would of said your crazy😄🙏🇺🇸🇬🇧."